CN110737256A - method and apparatus for controlling variable frequency drive system - Google Patents
method and apparatus for controlling variable frequency drive system Download PDFInfo
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- CN110737256A CN110737256A CN201810791133.3A CN201810791133A CN110737256A CN 110737256 A CN110737256 A CN 110737256A CN 201810791133 A CN201810791133 A CN 201810791133A CN 110737256 A CN110737256 A CN 110737256A
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The invention discloses a method for controlling a variable frequency transmission system, which comprises the steps of obtaining current operation state data containing state marks and fault state data of the variable frequency transmission system, utilizing a preset fault analysis network to perform attribution analysis on current faults when the current operation state data contain the fault state marks, determining fault events, obtaining fault reason types corresponding to the fault events, utilizing the fault analysis network to generate fault coping control strategies aiming at the fault reason types according to the fault events and the reason types thereof, and feeding back the fault coping control strategies to a controller of the variable frequency transmission system to control the variable frequency transmission system.
Description
Technical Field
The invention relates to the technical field of variable frequency transmission system control, in particular to methods and devices for controlling a variable frequency transmission system.
Background
At present, users have higher and higher requirements on the reliability of variable frequency transmission systems. Through data statistics, in actual operation, the transmission system fault protection shutdown caused by more than 60% is caused by reasons including user operation, sudden change of external conditions and the like, and the unrecoverable faults caused by the system self account for less than 20% of the fault protection shutdown.
In the operation process of the variable frequency transmission system, the causes of the fault protection shutdown are mainly divided into three types, namely a user operation, such as user emergency shutdown processing, wherein the user does not operate according to startup/shutdown and operation flows, b, external causes, such as external power supply abnormal fluctuation/power failure, system load abnormal fluctuation and the like, and c, system self-component failures, such as sensor failure, power device failure, software failure and the like, are caused.
However, most of the reasons causing the above-mentioned fault protection shutdown can be recovered to the standby state for the variable frequency transmission system, so that for the variable frequency transmission system in the prior art, the defect that the corresponding fault-tolerant operation mechanism is started by analyzing the reasons is less involved, and the invention needs to judge and classify the operation state and the fault state and take corresponding protection measures.
Disclosure of Invention
In order to solve the technical problems, the invention provides methods for controlling a variable frequency transmission system, which comprise a step of acquiring current operation state data and fault state data of the variable frequency transmission system, wherein the current operation state data comprise marks for respectively indicating that the variable frequency transmission system is in a normal state, a potential risk state and a fault state, a step two of transmitting the current operation state data and the fault state data to a remote data analysis platform, analyzing and diagnosing the operation state of the variable frequency transmission system through the remote data analysis platform based on the current operation state data, the fault state data and historical operation state data, and generating a fault cause type aiming at the current fault event by using a preset fault analysis network when the current operation state data comprise a fault state mark, determining a fault event and a fault cause type corresponding to the fault event, a step three of generating a fault cause type aiming at the current fault event by using the fault analysis network according to the fault event and the fault cause type, and generating a fault cause type which comprises an intelligent analysis control command and a fault cause analysis command, and a fault cause control strategy which is selected from a redundancy control command, and a redundancy control strategy which is selected from the intelligent analysis control command and a redundancy control strategy which is selected from the fault control strategy of receiving a redundancy control strategy .
Preferably, in the step of determining a fault event and a fault cause category corresponding to the fault event by the remote data analysis platform through attribution analysis on the current fault by using a preset fault analysis network when the current operation state data includes the fault state mark, step includes analyzing the current operation state data and the fault state data, determining a fault point of the variable frequency transmission system, screening out operation state data for the fault point, comparing the operation state data of the fault point with operation standard information of the corresponding fault point in the fault analysis network, and analyzing the fault event and the fault cause category, wherein the operation standard information at least includes or more of user operation step standards, fault point safety threshold values, fault point abnormal mark signals, and software and hardware version information.
Preferably, in the second step, when the current operation state data includes a potential risk state mark, determining a potential risk event of the variable frequency transmission system by using the fault analysis network according to the current operation state data and the fault state data; and generating a redundancy mode switching instruction, fault solution opinion data containing current potential risk event information and an instruction based on the potential risk event, and feeding the redundancy mode switching instruction, the fault solution opinion data containing the current potential risk event information and the instruction back to a controller of the variable-frequency transmission system so as to confirm and update the software version and inform users and products of paying attention to the current potential risk event after sale.
Preferably, in the third step, when it is determined that the current fault event is the fault cause category of the user operation, identifying links which are improper for the user operation according to the operation state data of the fault point, and recording the times of the current fault event caused by , if the times does not reach a preset fault time threshold within the specified fault determination time, generating an automatic reset instruction and fault solution opinion data including information of the user operation improper for the current fault event by using the fault analysis network, so that the user obtains the links which are improper for the user operation and a corresponding correct processing method, and the variable frequency transmission system is in a standby state, and if the times reaches the preset fault time threshold within the specified fault determination time, generating a non-resettable instruction.
Preferably, in the third step, when it is determined that the current failure event is a failure cause type that can be redundantly processed by a hardware failure, the failure hardware is identified according to the operating state data of the failure point, and a redundancy mode switching instruction and a failure solution opinion instruction including the failure hardware information in the current failure event are generated to notify a product of replacing the failure hardware after sale.
Preferably, in the third step, when it is determined that the current fault event is a fault cause category with gradually changed external environment, the environment change position is identified according to the operation state data of the fault point, and a non-resettable instruction and a fault resolution opinion instruction including information of the environment change position in the current fault event are generated to remind the user to check the current environment change position.
Preferably, the third step further comprises: acquiring a reset mode instruction; and generating a corresponding intelligent analysis control instruction according to the reset mode instruction and by combining the fault event and the fault reason category.
, the invention also provides devices for controlling the variable frequency drive system, which comprises a controller of the variable frequency drive system, a remote data analysis platform and a remote data analysis platform, wherein the controller acquires current operation state data and fault state data of the variable frequency drive system, transmits the current operation state data and the fault state data to the remote data analysis platform, receives a fault coping control strategy and controls the variable frequency drive system according to the command of the fault coping control strategy, the current operation state data contains marks for respectively indicating that the variable frequency drive system is in a normal state, a potential risk state and a fault state, the remote data analysis platform analyzes and diagnoses the operation state of the variable frequency drive system based on the current operation state data, the fault state data and historical operation state data, and when the current operation state data contains a fault state mark, the remote data analysis platform utilizes a preset fault analysis network to attribute and analyze a current fault and determine a fault event and a fault cause type corresponding to the fault event, and utilizes the fault analysis network to generate intelligent fault analysis and fault cause analysis and intelligent switch control commands according to fault events and fault cause types, and fault cause control commands include intelligent reset control commands and redundancy control modes which are selected from .
Preferably, the remote data analysis platform comprises a fault state analysis module, wherein the fault state analysis module comprises a fault point determination unit and a fault event determination unit, the fault point determination unit is configured to analyze the current operation state data and the fault state data, determine a fault point of the variable frequency transmission system and screen out the operation state data aiming at the fault point, and the fault event determination unit is configured to compare the operation state data of the fault point with operation standard information of a corresponding fault point in the fault analysis network and analyze fault events and fault reason types, wherein the operation standard information at least comprises or more of user operation step standards, fault point safety threshold values, fault point abnormal sign signals and software and hardware version information.
Preferably, the remote data analysis platform comprises a risk potential status analysis module, and the fault status analysis module comprises: a risk potential event determination unit configured to determine a risk potential event of the variable frequency drive system using the fault analysis network based on the current operating state data and the fault state data; and the potential risk result generating unit is configured to generate a redundancy mode switching command, fault resolution opinion data containing current potential risk event information and a command based on the potential risk event, feed the command back to the controller of the variable frequency transmission system to confirm and update the software version, and inform users and products of paying attention to the current potential risk event after sale.
Compared with the prior art, or more embodiments in the above scheme can have the following advantages or beneficial effects:
the invention establishes a control redundancy and fault-tolerant technology, can realize the functions of real-time monitoring, fault judgment and maintenance instruction of the transmission system only through a controller and an analysis platform in the variable-frequency transmission system from a system platform, reduces the shutdown influence on the system caused by the fault under the condition that the transmission system runs stably, and has the characteristic of high reliability.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification , together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a step diagram of a method for controlling a variable frequency drive system according to an embodiment of the present application.
FIG. 2 is a detailed flow chart of a method for controlling a variable frequency drive system according to an embodiment of the present application.
Fig. 3 is a schematic diagram of a fault handling control strategy corresponding to each fault cause type in a fault state in the method for controlling the variable frequency drive system according to the embodiment of the application.
FIG. 4 is a schematic structural diagram of an apparatus for controlling a variable frequency drive system according to an embodiment of the present application.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.
In the operation process of the variable frequency transmission system, the causes of the fault protection shutdown are mainly divided into three types, namely a user operation, such as user emergency shutdown processing, wherein the user does not operate according to startup/shutdown and operation flows, b, external causes, such as external power supply abnormal fluctuation/power failure, system load abnormal fluctuation and the like, and c, system self-component failures, such as sensor failure, power device failure, software failure and the like, are caused.
However, most of the reasons causing the above-mentioned fault protection shutdown are for the variable frequency transmission system, which can be recovered to the standby state, so that the invention needs to judge and classify the operation state and fault state and take corresponding protection measures, aiming at the defect that the variable frequency transmission system is less related to the analysis of these reasons to start the corresponding fault-tolerant operation mechanism.
The invention relates to remote data analysis platforms, which are connected with a controller in a variable frequency transmission system and a remote module in the controller, can acquire current operation state data (working condition data) of the transmission system from the controller of the variable frequency transmission system, judge faults, analyze fault grades, fault reasons and the like of the transmission system by using a preset fault analysis network, simultaneously give related instructions and data related to corresponding fault coping control strategies and feed the related instructions and data back to the controller of the variable frequency transmission system and/or the remote module in the controller, so that the system can be reset to a standby state within a short time after the faults, and further continue to be put into use.
FIG. 1 is a step diagram of a method for controlling a variable frequency drive system according to an embodiment of the present application. FIG. 2 is a detailed flow chart of a method for controlling a variable frequency drive system according to an embodiment of the present application. The method for analyzing and controlling the fault of the variable frequency drive system in the present embodiment will be described in detail with reference to fig. 1 and 2.
As shown in FIG. 1, in step S110 (step ), a controller of the variable frequency drive system obtains current operating state data of the variable frequency drive system and fault state data, wherein the current operating state data contains flags indicating that the variable frequency drive system is in a normal state, a potential risk state, and a fault state, respectively.
It should be noted that the current operating state data containing the operating state flag according to the present invention may be directly obtained by the variable frequency transmission system, or may be obtained by determining and analyzing the actual operating state of the variable frequency transmission system through a preset fault analysis network via a remote data analysis platform, which is not specifically limited in the present invention.
Then, in step S120 (step two), the controller of the variable frequency drive system is used to transmit the current operating state data and the fault state data to the remote data analysis platform, the remote data analysis platform analyzes and diagnoses the operating state of the variable frequency drive system based on the current operating state data, the fault state data and the historical operating state data, identifies the state markers, and then, the corresponding processing needs to be performed according to the contents in the different state markers.
At step , referring to fig. 2, it is first determined whether the operating status of the variable frequency drive system is normal, i.e. the current operating status data includes a normal status flag, at this time, the remote data analysis platform generates a normal operating command and feeds the normal operating command back to the controller in the variable frequency drive system, so that the variable frequency drive system continues to operate.
, when the operation state of the variable frequency transmission system is not normal, continuing to judge whether the operation state of the variable frequency transmission system is a potential risk state, namely the current operation state data contains a potential risk state mark, at this time, the remote data analysis platform can determine the potential risk event of the variable frequency transmission system by using a fault analysis network according to the current operation state data and fault state data, then, generating a redundancy mode switching instruction and fault solution opinion data containing the current potential risk event information based on the potential risk event, and feeding the fault solution opinion data back to the controller of the variable frequency transmission system to confirm and/or update the software version.
And , when the operating state of the variable frequency drive system is not a risk potential state, continuing to judge whether the operating state of the variable frequency drive system is a fault state, that is, when the current operating state data includes a fault state flag, as shown in fig. 1 and fig. 2, performing attribution analysis on the current fault by using a preset fault analysis network in combination with the current operating state data and the fault state data, and determining a fault event and a fault cause type corresponding to the fault event.
Specifically, when the current operating state data includes a fault state flag, (referring again to fig. 2), first, the remote data analysis platform can analyze the current operating state data and the fault state data, determine a fault point (i.e., determine a fault location) of the variable frequency drive system, and screen out the operating state data for the fault point. The operation state data of the fault point includes all operation information related to the current fault point, and even includes information such as a fault point position, an actual operation step of a user, actual fault data or a fault indication signal of the fault point, a version or a number of related hardware equipment, a software version, and a software operation record.
In the actual application process, the faults at the same fault positions may be caused by different fault events, so after a fault point is analyzed, the fault event needs to be analyzed to obtain the reason causing the current fault, thereby realizing the attribution analysis of the fault event to obtain a more accurate intelligent analysis control command for the transmission system, as shown in fig. 2, step is performed, the operation state data of the fault point is compared with the operation standard information of the corresponding fault point in the fault analysis network, and the fault event and the fault reason category are analyzed, wherein the operation standard information includes or more of user operation step standards, safety thresholds of all monitoring positions in the fault point, abnormal flag signals of all monitoring positions in the fault point, software and hardware version information, and the like.
, according to the historical failure analysis result of the actual variable frequency transmission system, the failure protection shutdown phenomenon of the transmission system usually occurs due to failure events belonging to three reasons of user operation, external environment and system internal, wherein the external environment causes include sudden external environment change and gradual external environment change, and the system internal causes include hardware failure with redundant processing and unrecoverable, and software failure with weak risk and damage risk.
The following description is given by taking examples of fault events belonging to various fault cause categories as 1, fault events belonging to user operation categories are sudden stop, non-required process start and stop and the like, 2, fault events belonging to external environment sudden change categories are power grid power loss, load sudden change and the like, 3, fault events belonging to external environment gradual change categories are external electrical connection failure and the like, 4, fault events belonging to hardware fault redundancy processing categories are failure and the like of a certain phase sensor, 5, fault events belonging to hardware fault unrecoverable categories are power device damage, main circuit short circuit and the like, 6, fault events belonging to software weak risk categories are risk events which can be protected in time even if software defects are exposed in time and do not affect equipment safety, and 7, fault events belonging to software fault damage risk categories are events which can be correspondingly affected in a reversible way if software defects are exposed.
Next, after the fault event and the cause type thereof are determined, the process proceeds to step S130 (step three), in step S130, referring to fig. 1 and fig. 2, , according to the fault event and the cause type thereof, a fault handling control strategy including an intelligent analysis control command and fault solution opinion data and a command for the current fault event is generated by using a fault analysis network, and is output to a controller in the variable frequency drive system to drive a remote module in a controller of the variable frequency drive system and/or a controller of the variable frequency drive system to execute a corresponding command in the fault handling control strategy, wherein the intelligent analysis control command is selected from of automatic reset, non-reset and redundancy mode switching.
The method comprises the steps that when a remote data analysis platform sends a redundancy mode switching instruction to a controller of the variable frequency transmission system, the controller needs to be cut off according to related hardware devices involved in a determined fault event or a potential dangerous event, and the remaining equipment devices are used for continuously maintaining normal operation of the variable frequency transmission system.
In embodiments, as shown in fig. 3, when the current fault event is determined to be a fault cause type of user operation, identifying a link which is not properly operated by a user according to the operation state data of the screened fault point, and recording the number of times of the current fault event caused by the same reason, if the number of times does not reach a preset fault number threshold within a specified fault determination time, generating an automatic reset instruction and fault solution opinion data including user operation link information in the current fault event (wherein the user operation link information refers to information such as a specific link and a step of improper user operation) by using a fault analysis network, and sending the automatic reset instruction and the fault solution opinion data including the user operation link and related data of a corresponding fault solution method to a controller in the variable frequency transmission system to enable the user operation link to be in a standby state.
It should be noted that the failure frequency threshold value related to the present invention is an evaluation threshold value for the failure degree of the current failure event caused by the same reason, and when the variable frequency drive system still has a failure caused by the same reason after multiple resets, it indicates that the variable frequency drive system needs to go to step for troubleshooting.
, in embodiments, when the current fault event is determined to be a fault cause type with sudden change of external environment, the number of times of causing the current fault event due to is recorded, if the number of times does not reach a preset fault number threshold value within a specified fault judgment time, an automatic reset instruction is generated and sent to a controller in the variable frequency transmission system, so that the variable frequency transmission system is in a standby state, if the number of times reaches the preset fault number threshold value within the specified fault judgment time, a non-reset instruction is generated and sent to the controller in the variable frequency transmission system, and a fault resolution suggestion instruction containing the current fault event is generated and sent to the remote module, so that the remote module informs a user to investigate the fault cause by mail or other means.
, in embodiments, when it is determined that the current fault event is a fault cause category with gradually changed external environment, according to the operation state data of the fault point, the environment change position is identified, an unsettable instruction and a troubleshooting opinion instruction containing information of the environment change position in the current fault event are generated, and the unsettable instruction and the troubleshooting opinion instruction are returned to the controller in the variable frequency transmission system to remind the user to check the current environment change position.
, in embodiments, when the current failure event is determined to be the failure cause type of redundant processing of hardware failure, according to the operation state data of the failure point, the failure hardware is identified, a redundancy mode switching instruction and a failure solution opinion instruction containing the failure hardware information in the current failure event are generated, and the redundancy mode switching instruction and the failure solution opinion instruction are returned to the controller in the variable frequency transmission system to inform the product of replacing the failure hardware after sale.
, in embodiments, when the current failure event is determined to be the category of the failure cause that the hardware failure can not be recovered, according to the operation state data of the failure point, the failure hardware is identified, a non-resettable instruction is generated and sent to the controller in the variable frequency drive system, meanwhile, a failure solution opinion instruction containing the failure hardware information in the current failure event is generated and returned to the controller in the variable frequency drive system, and the failure solution opinion instruction is sent to the remote module, so that the remote module notifies users and products to maintain the current failure hardware in time after sale through mails or other methods.
, in embodiments, when the current fault event is determined to be a fault cause type with weak software risk, recording the number of times of causing the current fault event due to , if the number of times does not reach a preset fault number threshold within a specified fault determination time, generating an automatic reset command and sending the automatic reset command to a controller in the variable frequency drive system to enable the variable frequency drive system to be in a standby state, and if the number of times reaches the preset fault number threshold within the specified fault determination time, generating a non-resettable command and sending the non-resettable command to the controller in the variable frequency drive system, and generating a fault resolution suggestion command containing the current fault event information and sending the failure resolution suggestion command to a remote module in the variable frequency drive system to enable the remote module to notify users and products of paying attention to the current fault event after sale through mail or other ways.
Further , in embodiments, when the current fault event is determined to be a fault cause category with damage risk, the generated non-resettable command is sent to a controller in the variable frequency drive system, and at the same time, a fault resolution command containing information of the current fault event is generated and sent to a remote module in the variable frequency drive system, so that the remote module notifies users and products of the current fault event in time after sale through mail or other means.
It should be noted that the fault analysis network according to the present invention includes all fault points that can occur in each component in the variable frequency drive system, operation standard information of each fault point, all possible fault events causing each fault point, fault cause categories corresponding to each fault event, and fault coping control strategies corresponding to each fault cause category. The fault analysis network is constructed by a neural network algorithm according to historical fault information, historical operation information, influence relation information of historical fault points and fault events, consequence information of historical fault events and the like of all fault points and by using safety threshold data and fault point abnormal sign signals of all detection points of all components in the variable-frequency transmission system, operation standard step data, consequence data of all operation standard steps, fault grade standards and consequence data of all components, software fault grade standards and consequence data and the like. After the remote data analysis platform acquires the operating state data of the variable frequency transmission system, the operating state of the current variable frequency transmission system can be analyzed and responded in time to determine the real operating state, fault points, fault events, fault reason types and corresponding fault coping control strategies, so that the functions of real-time monitoring, fault judgment and instruction response can be completed.
Further , the failure analysis network can update the failure analysis network by obtaining new information of failure event, failure point operation standard information, failure reason category, etc. through user input or mining the operation state data of the variable frequency transmission system according to the actual application.
In addition, when a user is informed of a fault and needs to manually reset the variable frequency transmission system controller, a reset mode instruction can be issued through the variable frequency transmission system controller. When the remote data analysis platform acquires the reset mode instruction, the corresponding intelligent analysis control instruction can be generated according to the reset mode instruction and by combining the fault event and the reason category thereof. Wherein, the reset mode instruction includes: the automatic updating system comprises a direct self-reset instruction (which enables the controller of the variable-frequency transmission system to be directly restored to a standby state), a redundancy program switching self-reset instruction (which enables the controller of the variable-frequency transmission system to be restored to the standby state after being switched to a redundancy program), and an automatic updating remote latest program self-reset instruction (which enables the controller of the variable-frequency transmission system to be restored to the standby state after automatically updating a program in a remote module). Therefore, the remote data analysis platform directly judges and repairs the fault by self by directly utilizing the reset mode instruction without fault check and feedback of a user.
It should be noted that, when the operating state of the variable frequency drive system is not the fault state, it is necessary to return to the analysis and diagnosis step in step S120 to diagnose the actual operating state of the current drive system again.
Referring to fig. 1 and 2 again, after the remote data analysis platform generates corresponding failure handling control strategies for various failure cause categories, the process proceeds to step S140 (step four), and step receives the failure handling control strategies through the controller of the variable frequency drive system, and controls the variable frequency drive system according to instructions in the failure handling control strategies.
In another aspect, the invention also provides devices for a variable frequency drive system, fig. 4 is a schematic structural diagram of the device for controlling the variable frequency drive system according to the embodiment of the application, and the system comprises a controller 41 of the variable frequency drive system and a remote data platform 42.
Specifically, the controller 41 of the variable frequency drive system is capable of acquiring current operation state data and fault state data of the variable frequency drive system, transmitting the current operation state data and the fault state data to the remote data analysis platform 42, receiving a fault coping control strategy, and controlling the variable frequency drive system according to an instruction of the fault coping control strategy, wherein the current operation state data contains a flag for indicating that the variable frequency drive system is in a normal state, a potential risk state, and a fault state, respectively.
Next, a step is further described for the remote data analysis platform 42, where the remote data analysis platform 42 operates according to the analysis and diagnosis method and the fault handling control policy generation method in the above steps S120 and S130, where the remote data analysis platform 42 includes a state diagnosis module 421, a normal state handling module 422, a risk potential state analysis module 423, and a fault state analysis module 424.
, the status diagnosing module 421 in the remote data analyzing platform 42 can analyze and diagnose the operating status of the variable frequency drive system based on the current operating status data, the fault status data and the historical operating status data, when it is determined that the current operating status data includes the normal status flag, enter the normal status responding module 422, when it is determined that the current operating status data includes the risk status flag, enter the risk status analyzing module 423, when it is determined that the current operating status data includes the fault status flag, enter the fault status analyzing module 424, the remote data analyzing platform performs attribution analysis on the current fault by using a preset fault analyzing network, determines the fault event and the fault cause type corresponding to the fault event, and then generates a fault responding control strategy including an intelligent analysis control command and a fault solution data and command for the fault cause type to which the current fault event belongs by a fault result generating unit 4243 (described below) in the fault status analyzing module 424 according to the fault event and the fault cause type, and by using the fault analyzing network again, wherein the fault responding control command is selected from the intelligent analysis control command, and the redundancy mode which is not switchable between the automatic reset mode .
, the failure status analyzing module 424 at least includes a failure point determining unit 4241, a failure event determining unit 4242 and a failure result generating unit 4243, where the failure point determining unit 4241 can analyze current operation status data and failure status data, determine a failure point of the variable frequency transmission system, and screen out operation status data for the failure point, the failure event determining unit 4242 can compare the operation status data of the failure point with operation standard information of a corresponding failure point in the failure analysis network, and analyze a failure event and a failure cause type, where the operation standard information at least includes or more of user operation step standards, failure point safety thresholds, failure point abnormal flag signals, and software and hardware version information.
, latent risk status analysis module 423 includes a latent risk event determination unit 4231 and a latent risk result generation unit 4232, wherein the latent risk event determination unit 4231 determines a latent risk event of the variable frequency drive system using the fault analysis network according to the current operating status data and the fault status data, and the latent risk result generation unit 4232 is capable of generating a redundancy mode switching instruction, fault resolution opinion data and instruction including current latent risk event information based on the analysis result of the latent risk event determination unit 4231, and feeding them back to the controller of the variable frequency drive system to confirm and update the software version, and notify the user and the product of paying attention to the current latent risk event after sale.
Further , the normal state reply module 422 directly generates a normal operation command and feeds back the normal operation command to a controller in the variable frequency drive system to allow the variable frequency drive system to continue to operate.
The invention provides methods and devices for controlling a variable frequency transmission system, aiming at the defects of the prior art, a fault analysis network which integrates the information of fault points, fault point operation standard information, fault reason types and the like of all possible fault events in the variable frequency transmission system into a body is constructed, and by utilizing the fault analysis network, a remote data analysis platform can monitor the operation state of a controller in the variable frequency transmission system in real time, analyze faults, judge the fault occurrence reasons and give out corresponding fault coping control strategies in time.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1, a method for controlling a variable frequency drive system, comprising:
, acquiring current operation state data and fault state data of the variable frequency transmission system, wherein the current operation state data contains marks for respectively indicating that the variable frequency transmission system is in a normal state, a potential risk state and a fault state;
secondly, transmitting the current operation state data and the fault state data to a remote data analysis platform, analyzing and diagnosing the operation state of the variable frequency transmission system through the remote data analysis platform based on the current operation state data, the fault state data and historical operation state data, and when the current operation state data contains a fault state mark, performing attribution analysis on a current fault by the remote data analysis platform by using a preset fault analysis network to determine a fault event and a fault reason type corresponding to the fault event;
thirdly, the remote data analysis platform generates a fault coping control strategy comprising an intelligent analysis control instruction, fault solution opinion data and an instruction aiming at the fault reason category to which the current fault event belongs by utilizing the fault analysis network according to the fault event and the fault reason category, wherein the intelligent analysis control instruction is selected from types of automatic reset, non-reset and redundancy mode switching;
and step four, receiving the fault coping control strategy, and controlling the variable frequency transmission system according to the command of the fault coping control strategy.
2. The method according to claim 1, wherein in the step of performing attribution analysis on the current fault and determining a fault event and a fault cause category corresponding to the fault event by using a preset fault analysis network by the remote data analysis platform when the current operation state data contains the fault state flag, step includes:
analyzing the current operating state data and the fault state data, determining a fault point of the variable frequency transmission system, and screening out the operating state data aiming at the fault point;
and comparing the operation state data of the fault point with operation standard information of the corresponding fault point in the fault analysis network, and analyzing fault events and fault reason types, wherein the operation standard information at least comprises types or more of user operation step standards, fault point safety threshold values, fault point abnormal sign signals and software and hardware version information.
3. The method according to claim 1 or 2, characterized in that, in step two, when the current operating state data contains a potential risk state flag,
determining a potential risk event of the variable frequency transmission system by utilizing the fault analysis network according to the current operation state data and the fault state data;
and generating a redundancy mode switching instruction, fault solution opinion data containing current potential risk event information and an instruction based on the potential risk event, and feeding the redundancy mode switching instruction, the fault solution opinion data containing the current potential risk event information and the instruction back to a controller of the variable-frequency transmission system so as to confirm and update the software version and inform users and products of paying attention to the current potential risk event after sale.
4. The method according to claim 2, wherein in step three, in case that the current fault event is determined to be the fault cause category of the user operation, based on the operation state data of the fault point, the user misoperation link is identified, and the number of times of causing the current fault event due to the same reason is recorded,
if the frequency does not reach the preset fault frequency threshold value within the specified fault judgment time, generating an automatic reset instruction and fault solution opinion data containing the information of the user misoperation links in the current fault event by using the fault analysis network so that the user obtains the user misoperation links and a corresponding correct processing method and the variable frequency transmission system is in a standby state;
and if the number reaches a preset failure number threshold within the specified failure judgment time, generating a non-resettable instruction.
5. The method according to claim 2 or 4, wherein in step three, when the current failure event is determined to be a failure cause category which can be redundantly processed by hardware failure,
and identifying the fault hardware according to the running state data of the fault point, and generating a redundancy mode switching instruction and a fault solution suggestion instruction containing the fault hardware information in the current fault event so as to inform a product of replacing the fault hardware after sale.
6. The method according to of any one of claims 2, 4 or 5, wherein in step three, when it is determined that the current failure event is a failure cause category with gradually changed external environment, the environment change location is identified according to the operation status data of the failure point, and a non-resettable command and a failure resolution command containing information about the environment change location in the current failure event are generated to prompt the user to check the current environment change location.
7. The method of any of claims 1-6, wherein step three further comprises:
acquiring a reset mode instruction;
and generating a corresponding intelligent analysis control instruction according to the reset mode instruction and by combining the fault event and the fault reason category.
An apparatus for controlling a variable frequency drive system of the type 8, , comprising:
the controller of the variable frequency transmission system acquires current operating state data and fault state data of the variable frequency transmission system, transmits the current operating state data and the fault state data to a remote data analysis platform, receives a fault coping control strategy and controls the variable frequency transmission system according to an instruction of the fault coping control strategy, wherein the current operating state data contains marks for respectively indicating that the variable frequency transmission system is in a normal state, a potential risk state and a fault state;
and a remote data analysis platform which analyzes and diagnoses the operation state of the variable frequency transmission system based on the current operation state data, the fault state data and historical operation state data, when the current operation state data contains a fault state mark, the remote data analysis platform utilizes a preset fault analysis network to perform attribution analysis on the current fault, determines a fault event and a fault reason type corresponding to the fault event, and generates a fault coping control strategy comprising an intelligent analysis control command and fault solution suggestion data and commands aiming at the fault reason type to which the current fault event belongs according to the fault event and the fault reason type by utilizing the fault analysis network at step , wherein the intelligent analysis control command is selected from of automatic reset, non-reset and redundancy mode switching.
9. The apparatus of claim 8, wherein the remote data analysis platform comprises a fault status analysis module, wherein the fault status analysis module comprises:
a fault point determination unit configured to analyze the current operating state data and the fault state data, determine a fault point of the variable frequency drive system, and screen out operating state data for the fault point;
and the fault event determining unit is configured to compare the operation state data of the fault point with operation standard information of a corresponding fault point in the fault analysis network and analyze the fault event and the fault reason type, wherein the operation standard information at least comprises types or more of user operation step standards, fault point safety threshold values, fault point abnormal mark signals and software and hardware version information.
10. The apparatus of claim 8 or 9, wherein the remote data analysis platform comprises a risk potential status analysis module, the fault status analysis module comprising:
a risk potential event determination unit configured to determine a risk potential event of the variable frequency drive system using the fault analysis network based on the current operating state data and the fault state data;
and the potential risk result generating unit is configured to generate a redundancy mode switching command, fault resolution opinion data containing current potential risk event information and a command based on the potential risk event, feed the command back to the controller of the variable frequency transmission system to confirm and update the software version, and inform users and products of paying attention to the current potential risk event after sale.
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